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Finding the Fourth Proportional to 1,224.45, 1,836.93 and 531.29

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Solution

The fourth proportional to 1,224.45, 1,836.93 and 531.29 is: 797.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.45 : 1,836.93 = 531.29 : x
  2. Step 2: Convert to fraction form
    1,224.45/1,836.93 = 531.29/x
  3. Step 3: Cross multiply
    1,224.45x = 1,836.93 × 531.29
  4. Step 4: Simplify right side
    1,224.45x = 975,946.14
  5. Step 5: Solve for x
    x = 975,946.14/1,224.45
  6. Step 6: Final answer
    x = 797.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.